Petrography and geochemistry of late Quaternary dune fields of western Argentina: Provenance of aeolian materials in southern South America
Landscapes of western Argentina are dominated by aeolian sand of diverse composition, reflecting multiple sediment sources. This study focuses on determining the petrography and geochemical composition of sand from three western Argentina dune fields, Médanos Grandes, Médanos Negros and San Luis, to...
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2010
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| LEADER | 26238caa a22018137a 4500 | ||
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| 001 | PAPER-22889 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518205430.0 | ||
| 008 | 190411s2010 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-77952879597 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Tripaldi, A. | |
| 245 | 1 | 0 | |a Petrography and geochemistry of late Quaternary dune fields of western Argentina: Provenance of aeolian materials in southern South America |
| 260 | |c 2010 | ||
| 270 | 1 | 0 | |m Tripaldi, A.; Dept. of Geology, CONICET, University of Buenos Aires, Ciudad Universitaria, Buenos Aires C1428EHA, Argentina; email: alfo@gl.fcen.uba.ar |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a Landscapes of western Argentina are dominated by aeolian sand of diverse composition, reflecting multiple sediment sources. This study focuses on determining the petrography and geochemical composition of sand from three western Argentina dune fields, Médanos Grandes, Médanos Negros and San Luis, to better constrain the provenance of aeolian sand and its relation to Pampean loess. Médanos Grandes sands are litharenites to feldspathic litharenites, with metamorphic and volcanic rock fragments and lesser amounts of quartz and feldspar. Trace elements (U, Th, Sc, V) indicate the dominance of felsic source. A mixed provenance, with contributions from Sierras Pampeanas metamorphic-igneous complex, pre-Quaternary volcanic rocks and direct input from Andean explosive volcanism, is assumed. Médanos Negros sands are lithic feldsarenites, with abundant feldspars and quartz and lesser amounts of rock fragments. Trace elements indicate a mafic source for these aeolian sands, geochemically and petrographically distinct likely due to the input of ultramafic-mafic lithologies of the Sierra Pampeanas. The San Luis sand has substantial petrographic variability with lithic feldsarenites, feldspathic litharenites and lithic arenite. Trace element composition indicates a felsic source. A diagnostic attribute is the dominance of fresh pumice and volcanic glass shards. Contributions from Andean volcanic sources and local metamorphic and igneous rocks are ascertained. Pampean loess and western Argentina dune field sand show broad petrographic and geochemical similarities indicating aeolian sand, silt particles and, eventually, far travelled dust may have a relatively common source. Another viable source for loess is associated with aeolian abrasion in the many dune fields in western Argentina. © 2010 Elsevier B.V. All rights reserved. |l eng | |
| 536 | |a Detalles de la financiación: Secretaría de Ciencia y Técnica, Universidad de Buenos Aires | ||
| 536 | |a Detalles de la financiación: National Park Service | ||
| 536 | |a Detalles de la financiación: This study was partially supported by a Cooperative Agreement between the Univ. of Illinois and Dept. of Interior, National Park Service to forward a comparative analysis between North and South American dune fields. Additional funding was provided by UBACyT X866 Grant. Satellite images and meteorological data supplied by CONAE and Servicio Meteorológico Nacional (Argentina), respectively. Support for field logistics was provided by University of Buenos Aires. We gratefully acknowledge the critical reading of an early version of the manuscript by S. Marenssi and P. Leal and their helpful suggestions. The comments of the anonymous reviewers help to improve the paper. | ||
| 593 | |a Dept. of Geology, CONICET, University of Buenos Aires, Ciudad Universitaria, Buenos Aires C1428EHA, Argentina | ||
| 593 | |a Dept. of Earth and Environmental Sciences, University of Illinois at Chicago, Chicago, IL 60607, United States | ||
| 690 | 1 | 0 | |a DUNE FIELD |
| 690 | 1 | 0 | |a GEOCHEMISTRY |
| 690 | 1 | 0 | |a LATE QUATERNARY |
| 690 | 1 | 0 | |a PETROGRAPHY |
| 690 | 1 | 0 | |a SEDIMENT SOURCE |
| 690 | 1 | 0 | |a DUNE FIELD |
| 690 | 1 | 0 | |a EOLIAN DEPOSIT |
| 690 | 1 | 0 | |a FELDSPAR |
| 690 | 1 | 0 | |a GEOCHEMISTRY |
| 690 | 1 | 0 | |a LITHOLOGY |
| 690 | 1 | 0 | |a LOESS |
| 690 | 1 | 0 | |a METAMORPHIC ROCK |
| 690 | 1 | 0 | |a PETROGRAPHY |
| 690 | 1 | 0 | |a PROVENANCE |
| 690 | 1 | 0 | |a PUMICE |
| 690 | 1 | 0 | |a QUARTZ |
| 690 | 1 | 0 | |a QUATERNARY |
| 690 | 1 | 0 | |a SAND |
| 690 | 1 | 0 | |a TRACE ELEMENT |
| 690 | 1 | 0 | |a VOLCANIC ROCK |
| 690 | 1 | 0 | |a MEDANOS GRANDES |
| 690 | 1 | 0 | |a MEDANOS NEGROS |
| 651 | 4 | |a SOUTH AMERICA | |
| 651 | 4 | |a ARGENTINA | |
| 651 | 4 | |a LA RIOJA [ARGENTINA] | |
| 651 | 4 | |a SAN JUAN [ARGENTINA] | |
| 651 | 4 | |a SAN LUIS | |
| 700 | 1 | |a Ciccioli, P.L. | |
| 700 | 1 | |a Alonso, M.S. | |
| 700 | 1 | |a Forman, S.L. | |
| 773 | 0 | |d 2010 |g v. 2 |h pp. 33-48 |k n. 1 |p Aeolian Res. |x 18759637 |t Aeolian Research | |
| 856 | 4 | 1 | |u https://www.scopus.com/inward/record.uri?eid=2-s2.0-77952879597&doi=10.1016%2fj.aeolia.2010.01.001&partnerID=40&md5=e724e7e52e13fb3d97dd26dcf5e910cd |y Registro en Scopus |
| 856 | 4 | 0 | |u https://doi.org/10.1016/j.aeolia.2010.01.001 |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_18759637_v2_n1_p33_Tripaldi |y Handle |
| 856 | 4 | 0 | |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18759637_v2_n1_p33_Tripaldi |y Registro en la Biblioteca Digital |
| 961 | |a paper_18759637_v2_n1_p33_Tripaldi |b paper |c PE | ||
| 962 | |a info:eu-repo/semantics/article |a info:ar-repo/semantics/artículo |b info:eu-repo/semantics/publishedVersion | ||
| 999 | |c 83842 | ||